Bicycle helmet retention device



FIG. 1 is a side view of a bicycle helmet retention device showing our new design (the broken lines illustrate the helmet itself and a user's head and forms no part of the claimed design);

FIG. 2 is a side elevational view thereof, of the opposite side of FIG. 1;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The crosshatch shading shown in all views is understood to repeat throughout the indicated area. 

The ornamental design for a bicycle helmet retention device, as shown and described. 